Sand button for use on wooden snap flasks



R. SCHULZ.

Jan. 2, 1923. 1,441,035.

SAND BUTTON FOR USE ON WOODEN SNAP FLASKS.

FILED MAR. 28, 1922.

fave/116 I fi /CH/l/FD 507 1442 N y b H? RICHARD SCIICULE, OF DANVILLE, ELLI'NOIS.

SAND BUTTON FOR USE ON WOODEN SNAP FLASKS.

Application filed March 28, 1922. Serial No. 547,558.

i '0 all 1071 0722 it vim l/ concern.

Be it known that I, Rrci-mrn Senora, a citizen of the United States, residing at Danville, in the county of Vermilion and State of Illinois, have invented certain new and useful Improvements in Sand Buttons for Use on lVooden Snap Flasks, of which the following is a specification.

This invention. relates to sand buttons or small individual, attachable protuberances to be placed on the inside surfaces of founders flasks, or molds. to increase the frictional contact of the enclosed sand with said surfaces, whereby to more securely retain the sand in the flash or mold and prevent unintentional removal therefrom.

)ne of the objects of the invention is to provide improved means for retaining sand in a founders mold and especially in the upper part or cope thereof.

Another object is to provide a light, hollow, cone-shape button which may be secured to the inner surface of molds or flasks by use of a single nail.

A further object is to pr vide a button, of the character described, which is devoid of angular parts or projections and which has relatively wide base.

A further object is to provide sand reta ning projections for attachment to the inner surfaces of flasks or molds, which are small units and which may be distributed and grouped in locations where more urgently needed.

A further object is to provide a device which may quickly and easily be applied by a novice without requiring the service of an expert workman.

A still further object is to provide a device which is inexpensive to make, non- :zbsorbent, and light of weight.

Other objects and MlVZtHtZLgGS will. here inafter appear from a consideration of the following: description when taken in conjunction with the drawings, wherein Fig. l. is an isometric perspective of a snap flask showing the sand buttons ap plied to the inner surface of the cope.

Fig. 2 is an enlarged top plan view of the button.

Fig. 3 is a side elevation thereof.

Fig. 4: is an inverted plan view, and

Fig. 5 is a central section showing a nail inserted for holding the button on the wall of the flask.

In all the views the same reference characters are employed to indicate similar parts.

The snap flask consists of the drag 11 and the cope 12, held properly in register by the dowel clasp 18, of which there may be one on each end, as usual.

The drag is infrequently lifted from the bench o: mold board upon which it normally rests and therefore the friction of the sand with the smooth surface is sufficient, but the cope. which is lifted from the drag" to remove the pattern, requires something more dependable to retain the sand in place.

Cleats, consisting of elongated strips of wood, and the like, have heretofore been used for the purpose for which my sand buttons are employed, but they are unsatisfactory because they cannot be so conveniently grouped and distributed and require F the service of skilled mechanics to make and apply them. Nails and studs have occasionally been driven into the walls of the cope but these are frequently knocked oil by match plates or by the ram in compacting the sand around. the pattern. The sand button being; conical and having a wide base, the blow of the ramming tool is deflected when it strikes a button without removing or injuring the button.

I prefer to makethe sand buttons of sheet aluminum which will not corrode, is light, cheap and sufiieiently strong.

The button 14 is preferably substantially semispherical in cross section, having a central perforation 15 for a nail 16. To give greater strength to the structure, I prefer to provide the integral collar 17 inturned from the perforation to afford a' larger bearing surface for contact with the head 18 of the nail 16. This permits the head to be flush with the outer surface of the button. so as not to leave any sharp, angular projecting parts.

It will be noticed that the buttons are grouped on the inner surface of the cope in manner which would. be difficult of accomplishment with the ordinary wooden cleats.

While I have herein shown a single exemplification of my invention, it is manifest that changes may be made therein in v the configuration and disposition of the parts within the scope of the appended clalms. 

